Anaerobic sludge - Import export

SYSTEM SOLUTIONS FOR SEWAGE SLUDGE DIGESTION In the municipal sector, the focus is on the production of biogas from sewage sludge. The aim is to make the energy potential of the primary and secondary sludge from anaerobic sludge digestion usable. On the one hand heat and electrical power is obtained for operation of the sewage plant. On the other hand, the sludge is conditioned so that the other aerobic process stages can run more efficiently and thus more cost effectively. The Lipp KomBio reactor has established itself as an ideal solution in the municipal sector due to its construction and long service life and has been successfully installed in hundreds of plants at home and abroad. Thanks to the application of the SBR process in our digesters, and the tank geometry and construction, it is possible to make optimum use of the low energy potential of the sewage sludge and operate sewage sludge digestion economically.

Lipp systems are modular and can be extended, modified or integrated into existing systems WITH EASE. Biogas plants from Lipp are based on the so called, wet fermentation. Through a 2 stage process, i.e., via regulation by an upstream hydrolysis stage or other substrate pre treatment, input materials are prepared so that the anaerobic process can run optimally in the digester. Since it is the most flexible and the biological processes are best kept controllable Lipp favours the SBR process. This is also particularly suitable for anaerobic wastewater treatment, sludge digestion and is also used in agricultural biogas deposits. This means first that Lipp biogas plants are substrate flexible and allow an intensive use of the available digester area. Secondly, that with low self sustaining energy requirements, a high degradation rate is achieved. It is interesting to note that Lipp’s digester can be operated not just in the SBR process (Sequence Batch Reactor).

In the treatment of drinking water, whether done conventionally or via seawater desalination, agitators are used for rapid mix, precipitation and flocculation processes. Precipitation and flocculation processes require low shear, slow-running agitators. For pH adjustments and rapid mixing faster running agitators that can blend reactor content in a flash are required. Wastewater treatment also requires a multitude of application options for agitators. In anaerobic and anoxic tanks for nitrogen removal, slow-running agitators are used to suspend and homogenize activated sludge flocs. In aeration tanks, mixer/aerators can be used for efficient oxygenation and mixing. Where waste water is purified, sludge is generated. This sludge is generally conditioned using polymers, dewatered, and then digested in anaerobic sludge digesters to generate biogas. Special agitators are required for both polymer introduction and for digested sludge mixing.